水产学报2012，Vol.36Issue(10)：1592-1598,7.DOI:10.3724/SP.J.1231.2012.27876
乳山宫家岛以东牡蛎养殖水域秋季海—气界面CO2交换通量研究
Sea-air C02 flux in Crassostrea gigas aquaculture area of East Gongjia Island, Rushan, Shandong, in autumn
摘要
Abstract
Recently, several studies indicated that respiration and calcification activities by shellfish represent a net source of CO2. In order to assess the effect of shellfish aquaculture on the sea-air CO2 flux, a Pacific oyster Crassostrea gigas aquaculture area which is located in East Gongjia Island, Rushan City, was selected as the investigation area. Based on the investigation data of pH,total alkalinity(TA) ,Chl. a,etc. in October 2011, the concentration and horizontal distribution of dissolved inorganic carbon (DIC) system parameters were calculated. Moreover, sea-air CO2 fluxes and the contribution of phytoplankton to the sea-air CO2 flux were estimated. Results showed that the DIC concentration of sea surface water ranged from 1 953. 20 to 2 130.74 μmol/L,with an average of (2 048. 73 ±57. 19) μmol/L; the main component of DIC was HCO3- , which accounted for 88. 25% ; the pCO2 ranged from 220. 08 to 262. 29 μatm, with an average of (246.46 ±23.00) μatni; the sea-air flux of CO2 ranged from -53.78 to -21.93 mmol/(m2 · d) ,with an average of -42. 09 mmol/( m2 · d) , which indicated that this area acted as a strong sink of atmosphere CO2 in autumn; Carbon fixed strength of phytoplankton ranged from 460. 27 to 725.64 mg/(m2 · d) , with an average of (593.27 ±91.98) mg/(m2 · d) ; the higher sea-air flux of CO2 was mostly contributed by the photosynthesis of phytoplankton; there was no significant difference between culture area and non-cultured area in sea-air flux of CO2, which indicated that the respiration and calcification activities of oyster had little effect on the CO2 flux.关键词
太平洋牡蛎/浮游植物/溶解无机碳体系/pCO2/交换通量Key words
Crassostrea gigas/ phytoplankton/ DIC system/ pCO2/ sea-air flux分类
生物科学引用本文复制引用
蒋增杰,方建光,王巍,李加琦,孟伟,谭林涛,侯仕营..乳山宫家岛以东牡蛎养殖水域秋季海—气界面CO2交换通量研究[J].水产学报,2012,36(10):1592-1598,7.基金项目
国家"九七三"重点基础研究发展规划项目(2011CB409805) （2011CB409805）
国家自然科学基金项目(41006074) （41006074）
国家贝类产业技术体系专项(CARS-48) （CARS-48）
